Trogdor1138 said:
I'm around Level 55 or so, I'm using Cloud, Barret and Tifa.
I don't have Big Guard (?) which I keep seeing mentioned on FAQ's, it's my first time playing. My limit breaks are all at level 3 I believe.
Also, was surprised at the quick replies.
This is seriously making me almost upset, I've never reacted to a game this way before, but I feel somewhat betrayed now.
Well Big Guard is an enemy skill you learn from an enemy called Beach Plug (I think that's it's name) which you find on the beach coast near Costa del Sol. You'll need the Manipulate materia to get it from them, it's worth it cause it comes in quite handy, as do a lot of the enemy skills, considering the enemy skill materia doesn't gimp your characters stats.
Double cut is also a handy materia for Cloud to have, as standard giving you 2 attacks in one, levelled up it gives you 4. That one can be found in the sunken gilnika airship if I remember right. (As has already been mentioned, this is a good place to level grind, and it has some interesting finds down there, just save often when you first go there, it can be occasionally unforgiving)
Other than that, only use materia that you need, and make sure you're using materia that boosts the stats for what you're doing with that character, all magic and summon materia gimp characters physically, especially the really powerful ones.
Lastly if you can stand the tedium of it, go to Gold Saucer and spend some time in the battle arena, there's a couple of handy things to be won, chiefly Clouds Ominislash limit break, it's kinda boring getting enough GP to be able to play that many battles in the arena but it's worth it. Also note the Enemy Skill materia will help you out alot here too.
All of that is just scratching the surface of what you can do with the game but I hope that's of some help to you
EDIT: One more thing, I presume you've picked up clouds Ultima Weapon, it's damage is based on how much health Cloud has left, not always the best weapon for him to be carrying, Ragnarok tends to be more useful while you find your characters are still getting pummelled
